I've had zero issues going low carb. Classes ranged from 1 to 3 hours. Seminars ranged between 3 and 8 hours. Supplementing with one day of weightlifting. I did begin ending the night with a sweet potato or two after my sleep went to pot. That brought my sleep back to normal.

If you're eating paleo, then you no longer need to worry about macro or micronutrient beakdown, or caloric count. That's one of the many reasons the paleo is the go-to lifestyle change. The rules are few and easy.

If, on the other hand, you're a paleo wannabe and think that eating fewer carbs will make the difference - look out. Then everything has to be right in order to achieve anything for even a short term. And, you can't keep that up for long.